Title :
A passive UHF RFID meandered tag antenna with tuning stubs
Author :
Wu, Sung-Jung ; Ma, Tzyh-Ghuang
Author_Institution :
Nat. Taiwan Univ. of Sci. & Technol., Taipei
Abstract :
In this paper, we present a new design of passive UHF radio frequency identification (RFID) tag, which demonstrates a read range of 4.6 - 5.2 m at 915 MHz. The Kurokawa´s method and Friis free-space formula are adapted to calculate the theoretical power reflection coefficient and maximum read range, respectively. By means of simple tuning techniques, the proposed antenna demonstrates a bandwidth of 35 MHz with a compact size of 25 mm by 79 mm. This design is also found to be insensitive to dielectric loading. The performance analysis is presented along with the experimental data, which is in close agreement with the theoretical values.
Keywords :
UHF antennas; radiofrequency identification; Friis free-space formula; Kurokawa method; bandwidth 35 MHz; dielectric loading; distance 4.6 m to 5.2 m; frequency 915 MHz; passive UHF RFID meandered tag antenna; radio frequency identification tag; size 25 mm; size 79 mm; tuning techniques; Application specific integrated circuits; Costs; Impedance; Passive RFID tags; RFID tags; Radiofrequency identification; Reflection; Reflector antennas; Tuning; UHF antennas; RFID UHF band;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429688
